No one reads the terms and conditions, in fact it would take years reading them all (especially Apple's and Microsoft's EULAs, I wonder how big it would be when printed out), no one would read the entire corpus of laws of your country, even lawyers struggles to do so, no one likes to get anything forced from anyone either (like some forums do when they desperately try to shove the rules on the face of every user), we're not that desperate, but it's very recommended to read a forum's rules not only to avert bad surprises, but also to keep life on the forum pretty friendly.